MIKROFINE ADC-21 is
a chemical blowing agent based on Azodicarbonamide. It is useful in the
processing temperature range of 155 0C - 175 0C for
foaming rubber compounds particularly based on EPDM rubber.

CHARACTERISTICS

Chemical Compostion

:

Specially modified
Azodicarbonnamide

Physical Form

:

Pale Yellow Fine Powder

Moisture Content

:

0.2% max

Solubility

:

Practically insoluble in
water.

Decomposition temperature
in air (Capillary tube method)

:

158
20C

Gas Composition

:

Mainly nitrogen and carbon
monooxide

Gas/gram

:

185 cc at STP

SPECIAL FEATURES

MIKROFINE ADC-21 does not get
dissolved by the oils and plasticisers generally used in compounding. But
due to its fine particles, MIKROFINE ADC-21 can be dispersed during processing
if this process includes a milling operation or it can be also pre-mixed
with appropriate oil or plasticier.

Since the decomposition residue
of MIKROFINE ADC-21 is nearly white, it can be used in production of light
colored products.

0.5-3.0 PHR depending on
the polymer used and extent of expansion required.

STORAGE

MIKROFINE ADC-21 should be
stored

in cool and dry place.

away from all sources of heat.

away from strong alkalies and
acids with which it reacts.

FLAMMABILITY

MIKROFINE ADC-21 will burn
only when exposed to flame. Thermal decomposition of MIKROFINE ADC-21 causes
evolution of fumes resembling smoke. Large quantity of water should be
used to fight fire.

TOXICITY

MIKROFINE ADC-21 is of low
toxicity by skin contact and is mildly irritating to the eyes. Its decomposition
residues are also of low toxicity.

HANDLING

Though MIKROFINE ADC-21 is
substantially free from handling problems, care should be taken to prevent
its contact with skin and eyes. It is necessary to avoid dusty conditions
because of the possiblity of respiratory sensitisation.